RE: Auto Vectorizing help needed

2007-02-26 Thread Tehila Meyzels
[EMAIL PROTECTED] wrote on 26/02/2007 10:40:59: >I am targeting GCC 4.1.1 to a custom RISC processor; which has some vector >instructions (32 bit vectors). It can perform two 16 bit/ or four 8 bit >additions, subtractions, multiplications & shift operations simultaneously. >I would like to use t

Re: Auto Vectorizing help needed

2007-02-24 Thread [EMAIL PROTECTED]
You'll want to have a look at something like the SSE SIMD optimisation within the back end for the x86. I'd also download the GCC internals document for 4.3.x as it has some information on CPU SIMD optimisations. I've been reviewing this area heavily as I'm combining GCC and GPGPU (the same id

Re: Auto Vectorizing help needed

2007-02-23 Thread Richard Henderson
On Fri, Feb 23, 2007 at 04:13:39PM -0800, sdutta wrote: > I am targeting GCC 4.1.1 to a custom RISC processor; which has some vector > instructions (32 bit vectors). It can perform two 16 bit/ or four 8 bit > additions, subtractions, multiplications & shift operations simultaneously. > > I would l